Wrench.



P. Pv. PEREZ L F. S. BATISTA'.

WRENCH, APPLICATION man FEB. 1. 19u.

1,245,017. Fatemi oef. 30,1917.

A TTRNEYS UNITED sTATEs PATENT oEEicE.

PORFIBIO P. PREZ FERNANDO SANTANA BAIIISTA, F KEY WEST, FLORIDA.

WRENCH.

Specication of Letters Patent.

Patented Oct. 30, 1917.

Application'led February 7, 1917. Serial No. 147,087.

and residents of Key West, in the county of Monroe and State of Florida, have invented a new and Improved Wrench, of which the following is a full, clear, and eX- act description. j

The invention relates to a wrench. adapted for general purposes and particularly effective as a pipe wrench.

Objects of the invention are to provlde an improved adjustable retaining means .for the movable jaw of the wrench and to 1mprove the manner of forming and y1eld1ngly mounting the relatively fixed jaw.

rlhe nature of the invention and its ad#v vantages will clearly appear as the descrip-A tion proceeds.

Reference is to be had to the accompanying drawings forming a part of this specification in which similar reference characters indicate correspondingparts'in all the views. f Y f Figure 1 is a side elevation of a wrench constructed in accordance with. our invention;

Fig. 2 is a front view thereof; A

Fig. 3 is a cross section on the line 3 3, F ig. l;

Fig. 4 is a cross section. on the line 4 4, Fi 1.

he wrench includes a suitable handled shank l0 at the front end of which is mounted a jaw 11 by a pivot pin 12. The said pin f passes through a lug 13 on the jaw 1 1, said lug being received in a recess 14 1n the front end of the shank- 10.

Forward of the pivot 12 the shank 10 is formed with a rigid'lateral arm 15 and the jaw l1 is recessed at the front to produce side flanges 16 that overlap the sides of 'theA arm 15, thereby bracing and giving guided movement to the jaw 11. The jaw 11 is subject to a compression spring.17 which abuts against the back of the said. jaw adjacent tothe bases of the flanges 16, and abuts at its opposite end against the opposed surface of the arm 1 5. Thus the spring is housed between the anges 16 and permits the jaw to yield in gripping apipe. At the outer end of the recess 14,3. curved surface 18 is produced on the shank 10, the curve being struck with the pivot 12 as a center, and the opposed surfaces 19 of the anges 16 are correspondingly curved. By the dcscribed arrangement it will be seen that the spring 17 and the fixed abutment 15 are disposed at the same side of the wrench as the jaws and Vhoused by the jaws 11, sothat no additional projecting elements are disposed at the back of the wrench, the lateral projection represented 'by the jaw 11, representing the total lateral projection at the wrench head. V

The movable jaw 20 is slidable on the shank 10 to or from the jaw 11. At the inner face of the jaw 20 is a longitudinal series of teeth 21 which are adapted to interlock with mating teeth 22 on the opposed side of the shank 10. The opposite face or back of the shank 10 is formed with a longitudinal series of teeth 23 with which teeth 24 on a 'block 25 are adapted to interlock,

whereby to grip the shank between the jaw links 28 have pins 30 projecting from the',

inner faces thereof into longitudinal grooves 31 formed in opposite sides of the shank l0 so that in addition to the pivotal connection of the links with the movable jaw and the locking block 25, the links 28 may be rocked on the pins 30 as fulcrums.

The links 28 are formed integral with a head 32and a compression spring 33 is provided and disposed longitudinally of the wrench between the said head 32 and the rear surface of the jaw 20, one end of the spring being received on a pin 34 on the head 32 and the opposite end on a pin 35 on the jaw. The tendency of the spring is to rock the links 30 to a position to cause a locked engagement of the jaw 20 and block 25 with the toothed shank 10. To slide the movable jaw 20, pressure is exerted by the projection 37 on the jaw 20 for compressing the spring 33. The

slidable jaw may then be slid on the shank to the desired position and upon release of the pressure of the hand ing teeth to engage vhaving teeth the gripping surface of the jaw is more' nearly perpendicular of the shank for engagement with a nut.

Having thus described our invention we claim as new and desire to secure by Letters Patent:

l. A wrench including a handled shank,

a movable jaw thereon, and arelatively ixed jaw, the front and back surfaces of the said shank being toothed, said movable jaw havthe opposed teeth on the shank, a gripping block at the back of the shank and toothed to engage the opposed teeth on the shank, parallel front and rear links extending at the sides of the shank and pivotally connected with the movable jaw and the gripping block, the rear links being integral with a head positioned at the rear of the movable jaw, and a spring interposed between the said head and the movable jaw and disposed longitudinally of the wrench.

2. A. wrench including a handled shank on the front and back surfaces thereof, a fixed jaw on the shank at the front end, a movable jaw rearward ofi meedere the fixed jaw and having teeth to engage the opposed teeth on the shank, a gripping block at the back of the shank, link connections between the movable jaw and the gripping block. near the forward and rear ends of said block, the rear links being integral with a laterally extending head having a curvedV rem' surface adapted to be pressed against by the palm of the hand, the movable jaw presenting a rearwardly disposed surface opposite thesaid head and having a finger-hold at the outer end of said surface, and a spring interposed between the said head and the said movable jaw adjacent to the said linger-hold.

3. A wrench including a handled shank, a slidable jaw thereon, and a second jaw on the shank in front of the movable jaw, the second jaw having a lug and the shank having a recess receiving Said lug, a pivot eX- tending through the shank and through the said lug, a rigid lateral arm on the shank in front of the pivot, forwardly extending anges on the pivoted jaw at the front, said anges extending at the sides of the fixed lateral arm of the shank, and a spring housed between the said anges and abutting at its ends against the pivoted jaw and the said ixed arm.

PRFlRlO P. PREZ.

FERNANDO SANTANA BTESTA. 

